Applies To:

BIG-IQ Centralized Management

How do I manage BIG-IQ systems in a high availability configuration?

Setting up BIG-IQ®in a high availability configuration ensures that
you always have access to the BIG-IP® devices you are managing. In
a BIG-IQ high availability configuration, the BIG-IQ system replicates configuration
changes since the last synchronization from the primary device to the secondary device
every 10 minutes. If it ever becomes necessary, you can have the secondary peer take
over management of the BIG-IP devices.

Adding a peer BIG-IQ system for a high availability configuration

Before you can configure BIG-IQ systems for high availability (HA), you must have two licensed
BIG-IQ systems.

For the high-availability pair to synchronize properly, each system must be
running the same BIG-IQ version, and the clocks on each system must be synchronized
within 60 seconds. To make sure the clocks are in sync, take a look at the NTP settings
on each system before you add a peer.

Configuring BIG-IQ® in a high availability (HA) pair means you
can still manage your BIG-IP® devices even if one BIG-IQ systems fails.

Log in to the BIG-IQ® system with your user name and
password.

At the top left of the screen, select System Management
from the BIG-IQ menu.

On the left, click BIG-IQ HA.

Click the Add Device button.

Type the properties for the BIG-IQ system you are
adding,
and then click the Add button at the bottom of the
screen.

Promoting the secondary BIG-IQ system to primary for an HA pair

If the primary BIG-IQ® in an HA pair is having any type of system issue, you
might want to make the secondary BIG-IQ the primary system until you can fix the
problem.

You can promote the secondary system to primary when you are logged in to either BIG-IQ system
in the pair. This task describes how to promote the secondary BIG-IQ system while
logged in to the primary BIG-IQ system.

Log in to the BIG-IQ® system with your user name and
password.

At the top left of the screen, select System Management
from the BIG-IQ menu.

At the top of the screen, click Inventory.

On the left, click BIG-IQ HA.

Select the check box next to the secondary BIG-IQ system, and click the
Promote to Primary button.

The secondary BIG-IQ system synchronizes with the primary BIG-IQ
system,
and promotes to being the primary BIG-IQ system.

Deleting a BIG-IQ system from a high availability pair

To change or reconfigure (including upgrading) a BIG-IQ®
system in a high availability (HA) pair, you must first split the HA relationship by
deleting the secondary system.

Log in to the BIG-IQ® system with your user name and
password.

At the top left of the screen, select System Management
from the BIG-IQ menu.